Instructions: Please read the questions carefully and select the correct answer for each question. You have [insert time limit] to complete the exam. Good luck! Section A: Multiple Choice Questions 1. What is the main function of the heart? a) To pump blood b) To produce hormones c) To digest food d) To filter waste 2. Which of the following is not a type of blood vessel? a) Artery b) Vein c) Alveoli d) Capillary ........ .... Section B: Short Answer Questions 6. Explain the process of photosynthesis in plants. 7. Describe the structure and function of DNA. 8. What are the main stages of the cell cycle and what happens during each stage? ........ .... Solution: Section A: Multiple Choice Questions a) To pump blood c) Alveoli d) Alveoli a) To produce energy a) To carry out photosynthesis Section B: Short Answer Questions 6. Photosynthesis is the process by which plants use sunlight, water, and carbon dioxide to produce glucose (sugar) and oxygen. Chlorophyll, located in the chloroplasts of plant cells, captures sunlight and converts it into chemical energy through a series of reactions. ........ ....